The answer options
- Diminished emissions from exhaust
- Increased fuel consumptionCorrect
- Increased road safety
- Less pollution
Why that is the answer
Rapid acceleration forces your engine to work harder and burn significantly more fuel, while heavy braking wastes the energy you have just built up. Official driving guidance emphasises that smooth, planned driving conserves fuel, reduces vehicle wear, and improves safety. Aggressive driving techniques actually increase harmful exhaust emissions and air pollution, so options suggesting reduced pollution or improved safety are completely incorrect.
How this comes up in the real test
Questions from safety and your vehicle appear throughout the 50-question multiple-choice section, and the wording changes between versions. Learn the rule rather than the sentence: the DVSA can ask the same point from the opposite direction, and a memorised answer falls over the moment the phrasing moves.
The pass mark is 43 out of 50, so seven wrong answers is your entire margin. If a whole category is shaky, run the topic practice below until you are getting every question right for the right reason, then go back to full mocks under the clock.
More safety and your vehicle questions
- A vehicle MOT test will include an exhaust emissions test. What is the reason for this?
- Before leaving your vehicle unattended, what should you remove from it?
- How can drivers help the environment?
- How can driving in a fuel-efficient manner help protect the environment?
- How can the volume of traffic on roads be reduced?
- How can you avoid wasting fuel?